Transmission



lune-24, 1930.

G. B. COLEMAN TRANSMISSION Filed June 23, 1926 2 Sheets-Sheet 1 m as, 2: F R a9 INVENTOR. George .5. Coleman ATTORNEY.

Jun 24, 1930. ao 1,767,916

TRANSMISSION Filed June 23, 1926 2 Sheets-Sheet 2 @259 f. t 51' 5 P VIII/4 I I n I INVENTOR.

' George B. Coleman ATTORNEY.

atented June 24, 1 930 GEORGE B. COLEMAN, 0F PHILADELPHIA,

PENNSYLVANIA, 'ASSIGNOR TO COLEMAN AUTOMATIC} TRANSMISSION COMPANY, A CORPORATION OF CALIFORNIA.

TRANSMISSION Application filed June 23,

The object of the invention is to provide a transmission in which the torque-speed factor will, vary in a straight line in themceleration of the load from rest up to'the speed of the prime mover; to provide a construction of this character in which the energy of the prime mover is firsttrans, ferred to a moving mass and thereafter transferred by such mass to the load; to

provide a construction in which the finert masses will consist of fly wheels alternately and automatically connected with theprime mover and the load,the energy of the prime mover/being stored in the one while it is] being delivered to the other and vice versa; andto provide a construction of this characterflin which thevrate of change of con- Q and load maybe governed by the operator.

. consists in a construction and combination; I of parts of which a preferred embodiment isillustrated in the accompanying drawings,

wherein:

iFigure 1' is a horizontal sectional view nection of the masses with the prime mover With this object in view, the invention through a transmissionembodying the invention.

I Figures 2 and 3 are'respectively sectional tionalview showing a modification of the l viewson the planes indicated by the lines 22 and 33 of Figure 1.

' Figure l is a horizontal longitudinal secinventioni Figures 5, 6, 7 and8 lines 5'5,'6-6, 7 7 and 8-'8 of Figure 4.

'Figure 9 is a horizontal longitudinal sectional ,view of stillanother modification.

The driver and driven are representedrespectively as the stub shafts 10 and 11; which are designed, when'theinven'tionbe inthe forward end ofthe casing12 andthe f driven in the rear end of the casing, the,

(two, being in axial alignment and the former,

being operatively connected, with diamet-,

means of afgear 15 meshing with pinions 16 1926' Serial No. 118,025.

carried by thecountershafts, The counter shafts are 'journaledflin the forward and rear walls of the casing 12 and loosely surrounding these countershafts are hollow "shafts 17 which are provided with pinions 18 meshing with a gear 19 carried by the driven. 1 I v f Fly Wheels 20 are fioatingly supportedon the countershafts l4 and are designed for operative connection first with the countershafts and then with the hollow shafts 17 so that they may first be accelerated by means of the driver 10 by which the countershafts are rotated and thereafter transfer the energy thus stored to the driven 11.

Movement axially of the countershafts 14 is precluded by, means of collars 21 and 22 secured to the countershafts and the opera- 'tive connection of the fly wheels with the countershafts is effected by means of'clutch members 23 movable axially of the counter shafts but precluded from turning movement thereon bymeans of keys 24:. n

- Thimbles 25 axially movable of the countershafts effect engagement and disengagement of the clutch members with the fly" wheels through the instrumentality of fingers 26 rockably mounted in yokes 27 carried by the countershaft's. Similarly clutch members 28 are supported upon the hollow shafts 1'7 and engaged with or disengaged I from the fly wheels by means of thimbles 29 I operating in connection with fingers 30 carare respectively sectional vlews on the planes indicated by the ried by yokes 31 supported by the hollow shafts. The portions of the fly wheels 20 engaged by the clutch members 28, are inflthe "form of." disks 82 secured to the fly wheels Cinthe assembly of the apparatus by means of cap'screws 33. y

The thimbles 25 and 29 are actuated, the

one for releasing operation of its respective clutch member when theother effects clutching action thereof, and to this end they are operatively connected by means of doublebearings '35 carried by the casing} The forks are reciprocated by, means of spiral ended-shifter forks 34:"slidably mounted in j gears 36 which are operatively connected beingflby means of eccentrically disposed wrist pins 38. The spiral gears 36 are in mesh with and driven by afcommon spiral gear 39 supported on the stub extension 4&0

clutch 28 on the. hollow shaft 17 .surrounding the other countershaft. By this means,

the driver is acceleratin first oneof-the fl y i wheels and then the other, the period of accelerating the onebeing r attended withthe transfer by the other of the energy previously stored by the'driver, this transfer beingeffected by the actuation, of one of the clutch members 28 so that the fly wheel may drive its hollow shaft 17 and thus transfer its energy to the driven shaft 11 through the, gears 18 and 34.

In the modificatlonshown in Figures 5 to 8, inclusive,'the driver and driven and :51 are axially aligned, beingrespectively'journaled in the .forward and rear ends of the casing 52 and being connected centrally of the casing by means of a stub a projection 53 on the one engaging a socket driver by means of elliptical gears 55 caron the other. Paralleling the driver and posite sides of the same are the counter- V shafts 5 L whichrare journaled ,in the opposite ends of the casing. These countershafts are operatively connected with the V 'ried by them and meshing with an elliptic gear 56 carried by the driver. r Each countershaft 54: carries its own fly wheel-57 which is provided with a ball clutch 57 mounted. so that in the turning movement 7 of the'shafts 54, the fly wheelmay not fall below the angular speed of the shafts but may acquire agreater angular speed than v 50 the latter. I I v Since. there are operative connections between the driver and the countershafts means of'the elliptic gearing, an intermittent rotary movement 1s imparted to the 3 countershafts and at the instant of their greater angular movement, the clutches become effective for imparting movement to the fly wheelswhich may continue after the V angular speed of the countershafts drops on.

The fly wheels thus rotate free of the countershafts until their speeds at any instant drops off to the speeds of the'counter'shafts at that" instant, Loosely mounted on the countershafts 54 are spiders58 and'connection between the spiders and the fly wheels are so disposed that Theretween points on the side faces of the fly wheels and points at the extremities of the arms of the spiders The spiders are 0peratively connected vwith the driven 51 by means of pinions GOcarried by them which mesh with a spur gear 61 carried by the in the fo -n1 ofsprings 59connected be- 7 thus the acceleration of the fly wheels 57 f is effected, the energy thus stored being transferred tothe driven from the fly wheels through the medium 'of the y1eld-" ing connections of the latter with the SP1- ders which are positively connected with the driven, as before described.

Tn the modification shown in Figure 9Q a single fly wheel is employed in lieu of the two shown in the form illustrated in igure 71. This fly wheelj is 'floatingly mounted on the driven 71 which is axially aligned with the driver 72 and is alternately err-" gaged "by the clutch members 73 and "7 f mounted on opposite sides thereof, the former being keyed to the driven for movement axially thereof and the latter being similarly connected to the "driver." Thim bles 75 and 76 are formed as parts .of the v clutch members 73' and 74 and are engaged by" shifter forks77 and 78 connected a common shifter rod 79. The clutch mem- V bers are keyed to their respective-shafts so driven and disposed ondiametrically opthat there may be no relative angular or turning movement, and anovem'ent of 'the shifter rod 79 in one direction effects c'l utcha ing operation of the one clutch member, and

the releaseof the other andthe' movement ies of the shifter rod in the other direction effecting the reverse of these operations.

Thus, the driver 72, when connected'to a prime mover, will funeti'on to vdrive thefly wheel during the period when the clutch member "74ris in clutching position,r idling when the clutch member 74L is released, at which time the clutch 73 functioning, the

energypreviously stored in the fiy wheel 70 will be transferred to the driven 71;

The invention having been jdescribed, 7

what is claimed as new and useful is:*

mass members and thedriving memberand the mass 'members and the driven member,

said means being actuableto, effect connec-V. tion between one of the mass members and the driving member simultaneously with the connection of another mass member with the driven member;

2. A' transmission comprising'driving and i. driven members, a p'lurality offfreely rotat ing mass members, and means for effecting operative connections between the mass members and the driving member and the mass members andthe driven member, said means being actuable to effect connection between one of the mass members and the driving member simultaneously with the connection of another mass member with the driven member and vice versa.

3. A transmission comprising driving and driven members, a plurality of freely rotating mass members, and means for eifecting operative connections between the mass members and the driving member and the mass members and the driven member, said means being actuable in timed relation with one of the members and functioning to connect one mass member with the driven member simultaneously with the connection of another mass member with the driving member and vice versa. 7

In testimony whereof he afiixes his signature. v

GEORGE B. COLEMAN. 

